Certificate Policy & Trust
GxPSign uses digital certificates to cryptographically sign PDF documents, ensuring authenticity and integrity.
Platform Signing Certificate
All documents signed through GxPSign are digitally signed using our platform certificate. This certificate is embedded in each signed PDF and can be verified by any PDF reader that supports digital signatures.
Platform certificate information is not available at this time.
Signature Standards
PAdES (PDF Advanced Electronic Signatures)
Compliant with ETSI EN 319 142 for PDF digital signatures.
SHA-256 Hash Algorithm
Industry-standard cryptographic hash for document integrity.
RSA 4096-bit Keys
Strong asymmetric encryption for digital signatures.
RFC 3161 Timestamps
Standard-compliant timestamping for legal validity.
Verifying Signatures
Documents signed by GxPSign can be verified using any PDF reader that supports digital signatures:
Adobe Acrobat / Reader
Open the PDF and click on the signature panel. Adobe will show the signature status and certificate chain.
Preview (macOS)
Open the PDF and go to Tools > Show Inspector > Signatures to view signature details.
Command Line (OpenSSL)
Use pdfsig from poppler-utils to verify signatures programmatically.
Questions about our certificates?
Contact our security team for certificate-related inquiries.
Contact Security Team